Sanpar microfilters, in association with hiross spa, italy, supplies offers large pansion dryers. Their key features and specifications of large expansion dryers are:
- flow rates from 2,000 to 6,000 cfm;
- operating pressures from to 12 bar;
- operating temperatures from 10°c to 50°c;
- fully hermetically sealed compressor;
- refrigerant is r-22 or eco-friendly r407c/r134a;
- low power consumption using 400 v/3 ph/50 hz supply;
- constant pressure dew-point of +3°c with guaranteed residual water vapour content of not more than 0.75 gr/nm3;
- dry air rh is brought down to less than 15%;
- and twin compressors with iwin evaporators.
These large expansion dryers are microprocessor controlled with temperature sensors. These temperature sensors are used for inlet air, outlet air, ambient air, dew-point, gas suction, gas discharge and condensing temperature; and pressure sensors for gas suction, gas discharge, high and low pressure which . This results in: predictive maintenance; low power consumption; and constant dew-point with varying compressed air heat load depending on the plant air consumption. Special condensers using aisi 316 plate heat exchangers are watercooled using aisi316. These large expansion dryers are direct expansion type.
